55507577 has 8 divisors (see below), whose sum is σ = 57457920. Its totient is φ = 53567280.

The previous prime is 55507561. The next prime is 55507583. The reversal of 55507577 is 77570555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55507577 - 2⁴ = 55507561 is a prime.

It is a super-2 number, since 2×55507577² = 6162182208821858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55507597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9758 + ... + 14360.

It is an arithmetic number, because the mean of its divisors is an integer number (7182240).

Almost surely, 2^55507577 is an apocalyptic number.

It is an amenable number.

55507577 is a deficient number, since it is larger than the sum of its proper divisors (1950343).

55507577 is a wasteful number, since it uses less digits than its factorization.

55507577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5023.

The product of its (nonzero) digits is 214375, while the sum is 41.

The square root of 55507577 is about 7450.3407304633. The cubic root of 55507577 is about 381.4615390767.

The spelling of 55507577 in words is "fifty-five million, five hundred seven thousand, five hundred seventy-seven".